INDEX. 



367 



Peckham, George W. and Elizabeth G., 109, 

 173. 



Perception, accuracy of, 248. 



Perty, 17. 



Phiilijipus mnrsitans, the bite of, 276. 



Philoilronuis, nest of, 323, 347. 



PhilljTa riparia, see Uloborus. 



Pholcus phalangioides, 223, 353. 



Physical power of spiders, 229. 



Pliny, 241. 



Poison of spiders, 32 ; eflects and u.ses of. 

 Chapter XVI. ; poison fangs of Argiope, 

 268, 269; gland of Epeira, 269, 270; gland 

 and falx of Nemesia, 270, 271 ; of ICpeira 

 diadeniata, 270 ; of Hentz's Tarantula, 270, 

 271 ; effects of, 271 ; bite of Epeh-a, 272 ; 

 inoculation with, 272 ; comparative harm- 

 lessness, 273 ; venomous effects, 274 ; by 

 Latrodectus, 275 ; of Nephila, 275 ; of Sal- 

 tigrades, 276 ; popular notions, 277 ; effects 

 on insects and spidere, 278 ; a reserve 

 weapon, 280 ; superstitious notions con- 

 cerning, 281, 282; Argiope copliinaria, 

 fangs and falces, 268; position of poi- 

 son gland of, 269 ; Epeira domiciliorum, 

 poison gland of, 269; gland poison, 269, 

 270 ; muscles surrounding poison gland, 

 269. 



Prey, capture of, 67, 86, 234. 



Protective architecture, 284, see Nesting. 



Protective envii-onnient of Labyrinthea's nest,' 

 132. 



Protective industry, 308; Argiope's shield, 

 99 ; Argiope's wings or fenders, 104 ; apron 

 of Orchard spider, 152. 



Protection of person, protective use of fore 

 legs, 69. 



Protection, of snares by ribbons, 57. 



Psocidte, 331. 



Pulmonary sacs, 27. 



Purseweb sjjider, 325 ; see Atypus abboti. 



Pyriform glands, 40, 41. 



Radii, bent in the notched zone, 134 ; order 

 of spinning, 75 ; number of, 85 ; single or 

 double, 76 ; spinning the first, 74 ; varia- 

 tion in number, 139, 140. 



Rain, dissolving spinningwork, 102; effect of, 

 on webs, 92. 



Ray, John, 61. 



Ray spider, Chapter XII., 195; see Theridio- 

 soma. 



Reasoning powers of spiders, 227. 



Rennie, 76, 86. 



Reproduction, organs of, 27 ; of limbs, 78. 



Retitelarife, 16, 17, 20, .342; see Lineweav- 



ers. 

 Rhizopods, shells of, 333, 334. 

 Ribbon decorations, 125; temporaiy in Ejie- 



ira, 116; possible origin of, 117. 

 Robertson, Edward H., 352; describes nests 



of Theridium riparium, 317. 

 Rolled leaf nests, 285. 

 Romanes, 77, 78. 

 Rudimentary snares, 229. 



Sailing, habit of Tetragnatha, 159. 



Saltigrades, 19, 347 ; nest of, 316 ; manner of 

 spinning, 327. 



Scaffolding, spiral, 79 ; removed after use, 86. 



Scaffold foundations, Nephila's peculiar form, 

 147. 



Schaffenberger, 231. 



Scudder, S. H., 19. 



Sectoral orbs, 130. 



Sedentary spidere, 15. 



Segestria senoculata, 50. 



Sewing, 285; design of, 315; by Epeira thad- 

 deus, 303 ; manner of, 302. 



Shamrock spider, see Epeira triaranea. 



Shield, central shield of Argiope, 97 ; use of, 

 99. 



Shooting tlireads, 45, 63. 



Silk, licjuid, of spiders, 39 ; used for sailing, 

 160. 



Simon, M. Eugene, 107, 272. 



Site of snares dependent on Inundation line, 

 66, 181. 



Sloane, Sir Hans, 233. 



Snake, enmity between sjjider and, 241 ; en- 

 snared by spider, 237, 238. 



Snare, as a tool for trapping, 247 ; wear and 

 tear of, 264. 



Spigots, spinning, 36, 46, 48; see Appendix. 



Spines, tarsal, used in spinning, 81. 



Spinnerets, 34; anterior, 37; middle, 36; pos- 

 terior, 35; used to clamp spiral string, 81, 

 82. 



Spinning, Argiope's method of spinning 

 shield, 99, 100. 



Sjiinning glands, of Epeira, 39, 43 ; of Aga- 

 lena labyrinthea, 45 ; of Tegonaria donies- 

 tica, 45 ; see Ajjpendix. 



Sjiinning organs, anatomy of. Chapter II., 

 34 ; muscles regulating, 51. 



Spinning spools, development of, 50 ; see Ap- 

 pendix. 



Spinningwork, analogies, 170 ; classification 

 of, 284. 



Spiral threads of Dictyna, 355. 



